shake fitzjohns

I am a uk tax resident with a property in Spain that I rent out for short periods in the summer while I am in the UK. I pay a flat rate of 24% tax for the rental income in Spain which I declare on my self assessment return in the UK. I am under the minimum threshold allowance for the previous tax year so have no tax to pay in the UK. Can I claim a refund for the tax paid in Spain and if so how do I go about claiming it back? Thank you